a wire is stretched so that its length becomed 6/5 times of its original length. if its original resistance is 25 ohm find its new resistance and resistivity. give justification for your answer in each case
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Answer: 30 ohm
Step-by-step explanation:
R= rho l/A
25= rho l/A eq1
X= rho 6/5 l/A eq2
Eq1/eq2
= 25/X = l/6/5l
25x6/5 = X
X ohm. =30 ohm
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